標題: | Room temperature negative differential resistance in DNA-based molecular devices |
作者: | Jangjian, Peng-Chung Liu, Tzeng-Feng Li, Mei-Yi Tsai, Ming-Shih Chang, Chia-Ching 材料科學與工程學系 生物科技學系 Department of Materials Science and Engineering Department of Biological Science and Technology |
關鍵字: | biomolecular electronics;DNA;electrical conductivity;electrical resistivity;gold;oxidation;reduction (chemical) |
公開日期: | 26-一月-2009 |
摘要: | A molecular device fabricated from metallic deoxyribonucleic acid (M-DNA) exhibits a negative differential resistance (NDR) behavior. When two gold electrodes were connected by Ni(2+)-chelated DNA, which was converted from lambda-DNA, not only was the conductivity of DNA improved, but a NDR device was formed as a full cyclic voltage sweep was applied to measure its current versus voltage characteristics at room temperature and in an ambient environment. Such electronic characteristics of a M-DNA device may have been caused by the redox reactions of Ni ions. This finding provides a simple way to construct electrical nanodevices from biological molecules. |
URI: | http://dx.doi.org/10.1063/1.3074502 http://hdl.handle.net/11536/7726 |
ISSN: | 0003-6951 |
DOI: | 10.1063/1.3074502 |
期刊: | APPLIED PHYSICS LETTERS |
Volume: | 94 |
Issue: | 4 |
結束頁: | |
顯示於類別: | 期刊論文 |